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In recent decades, wireless doorbell systems that do not require wall wiring have become popular. The doorbell button contains a built-in radio transmitter powered by a battery. When the button is pushed, the transmitter sends a radio signal to the receiver unit, which is plugged into a wall outlet inside the building.
Some long-range wireless doorbells can extend the sound range distance from 300 to 500 feet, with select units extending up to 3,000 feet. Depending on your homeâs construction, thick internal walls or stone walls may interfere with the signal. In this case, you may want to consider a wired doorbell system.